feat: add tests for import polling, login page, money utilities, and query keys

- Implemented tests for import polling functionality, ensuring correct behavior for active and terminal import statuses.
- Created tests for the login page, validating user interactions and error handling.
- Added unit tests for money utility functions, covering parsing, formatting, and summation of monetary values.
- Developed tests for query keys, ensuring proper scoping and invalidation roots.

chore: setup testing environment and configuration

- Added setup file for testing with Vitest and Testing Library.
- Configured TypeScript and Vite for the frontend project.
- Created Docker and Nginx configurations for local development and production environments.
- Established a PostgreSQL initialization script for setting up application roles.

docs: add README and environment configuration for infra

- Included README for the infra directory, detailing local development setup and service descriptions.
- Created an example environment configuration file for local development with placeholders for sensitive information.

frontend/package.json

@@ -0,0 +1,50 @@
+{
+  "name": "finance-frontend",
+  "private": true,
+  "version": "0.1.0",
+  "type": "module",
+  "scripts": {
+    "dev": "vite",
+    "build": "tsc --noEmit && vite build",
+    "preview": "vite preview",
+    "typecheck": "tsc --noEmit",
+    "lint": "eslint .",
+    "test": "vitest run",
+    "test:watch": "vitest",
+    "api:generate": "node scripts/generate-api.mjs"
+  },
+  "dependencies": {
+    "@hookform/resolvers": "^5.1.0",
+    "@tanstack/react-query": "^5.80.0",
+    "i18next": "^25.2.0",
+    "react": "^19.1.0",
+    "react-dom": "^19.1.0",
+    "react-hook-form": "^7.57.0",
+    "react-i18next": "^15.5.0",
+    "react-router-dom": "^7.6.0",
+    "zod": "^3.25.0"
+  },
+  "devDependencies": {
+    "@eslint/js": "^9.28.0",
+    "@testing-library/dom": "^10.4.0",
+    "@testing-library/jest-dom": "^6.6.0",
+    "@testing-library/react": "^16.3.0",
+    "@testing-library/user-event": "^14.6.0",
+    "@types/react": "^19.1.0",
+    "@types/react-dom": "^19.1.0",
+    "@vitejs/plugin-react": "^4.5.0",
+    "eslint": "^9.28.0",
+    "eslint-plugin-jsx-a11y": "^6.10.2",
+    "eslint-plugin-react-hooks": "^5.2.0",
+    "globals": "^16.2.0",
+    "jsdom": "^26.1.0",
+    "openapi-typescript": "^7.8.0",
+    "typescript": "~5.8.3",
+    "typescript-eslint": "^8.33.0",
+    "vite": "^6.3.5",
+    "vitest": "^3.2.0"
+  },
+  "allowScripts": {
+    "esbuild@0.25.12": true
+  }
+}